This is a procedure as to how to get rid of the timer for server side configuration. I'm pretty sure we aren't breaking any laws here considering how all the stuff there was basically opened for configuration.

Open up the file gpm_cq.py with notepad, it's under Battlefield 2 Standalone Demo Server\mods\bf2\python\game\gamemodes

Locate the line

host.registerHandler('TimeLimitReached', onTimeLimitReached, 1)

Place a # in front of it so it appears like

#host.registerHandler('TimeLimitReached', onTimeLimitReached, 1)

This will make the 12 min timer still appear but once it hits 0:00 the clock will disappear and you will be able to play until the tickets expire.